"Everyone was cheering including Beyonce, who was throwing her hands up in the air on the sidelines. Kim was also cheering them on."

The source added: "Kim was chilling out on the sidelines, and not really dancing, but Kelly Rowland, Lala Anthony and Ciara were going for it, and Beyoncé was throwing her hands up to the tune too."
"Before long they had most of the guests up on the floor joining in."

Serena has been close to Beyonce for years and even starred in her Sorry video doing a sexy dance in a black leotard.

Jay Z, Eva Longoria, Kelly Rowland, and Ciara were also there to celebrate in New Orleans for the Beauty and the Beast-themed bash and held a cocktail reception in the street outside the venue - complete with jazz musicians.

It's a good job Serena let her hair down for the epic celebration for her big day, as it is revealed she is already planning on getting back to Wimbledon next year - with her tot in tow.

The Sun Online can reveal the 36-year-old world champion is planning her Wimbledon comeback for next summer.
Tennis ace Greg Rusedski said: "Serena will be back at Wimbledon next year, and she’ll bring her baby!’